Chain



the gap after the fin is formed, and so the greater the fin produced.

Therefore, when rolls made in accordance with the first part of my invention are used with a. simple vertical movement of the roll P, the conicity of the working roll faces M, M must only be slight, that is to say the base angle of the cone must not exceed 15.

I am aware that rolls having conical working faces have been previously suggested for a different type of mill, in which the roll shafts are not extended in opposite directions, and only one shaft, which is capable of 'movement or adjustment on end, is driven. In such mills, however, the base angle of the cone constituting the working face of a roll greatly exceeds 15, the consequence being that a tire or hoop has to be passed through two pairs of rolls in succession, one pair of rolls being shaped differently from the other so that by the complementary action of the differently shaped rolls the tire could be rolled without finning. But by the first part of my invention if it is desired to roll a tire with a simple vertical movement of the roll shaft P, I am able to do so with one pair of rolls without undue finning, by making the base angle of the cone on the working faces such that it does not exceed 15.

Now it will be seen from the above that the amount of rolling in width which can be done with a simple vertical lift of the roll shaft P is dependent upon the amount of conicity of the roll faces, and it is also at any stage proportional to the reduction in thickness of the tire or hoop rolled.

Consequently, as the tendency to fin limits the amount of conicity, the reduction in width is also limited. Moreover, a tire,or hoop which is reduced a small amount in thickness is also reduced a small amount in width, and conversely.

The object of the second part of my invention is to make the reduction in width independent of either the amount of conicity on the'roll faces, or of the reduction in thickness, or of both, and I effect this by making one or both of the flange faces .of conical form and making one of the roll shafts P, P move endways during the process of roll- 1 prefer to have the roll shaft P fixed to an adjustable thrust block and to give the thrust block of the roll shaft P' an end movement by means of rollers or slippers on trunnions on the thrust block acting on former plates'on the frame of the mill as more particularly described below.

The third part of my invention consists in making the thrust blocks, which in every known form of this type of mill are fitted over the roll shafts, as separate units at the ends of those shafts.

The advantages of this partof my invention are 1 (1) There is no restriction on the space occupied by the separate unit thrust blocks, and consequently 1 can use a larger and better designed thrust block than is possible under the present known arrangements. This is of utmost consequence, as it enables the greater thrust caused by the reduction of the tire or hoop in width during rolling to be dealt with. V i V (2) The roll shaft can be changed much more quickly as it not necessary to disturb the separate unit thrust blocks.

I will now proceed to describe more particularly the second and third part of my invention by reference to Figs. 5 and 6, which show, respectively, a longitudinal view mainly in section and an end elevation of the mill embodying my improvements.

The fixed roll carriage ais firmly attached to the bed of the mill 6 and on each side of it are side frames 0 and 0, which are also attached to the bed I).

The roll carriage has bearings (Z, 6, carrying the roll shaft P, and it is extended and carries the thrust block unit. The base f of the thrustbloek unit works in slides on the roll carriage a, and the whole unit can be adjusted longitudinally by means o fitie bars which are not shown in Fig. 5 but extend from the unitto the side frames 0, c.

is a large diameter collar on the thrust block shaft, h is a fixed collar on a spherical bearing on the thrust block frame and is fittid with anti-friction metal, preferably in par s.

Motive power is applied to the thrust block unit shaft at 7' and is transmitted to the roll shaft P, through the slotted disc 7.2, the roll shaft P having a rectangular end Z to fit the slot in disc k. The roll shaft P is free to move endways in its bearings and is prevented from drifting forward by means of the dovetailed end Z in the slot in 7 In order to change aroll shaft P it is only necessary to rotate the shaft if necessary, until it occupies a position at right angles to that shown in Fig. 5 (i. e. correspmiding to that of shaft P in Fig. and then when the bearing caps are removed it can be lifted straight out.

The movable roll carriage m is guided in vertical slides, not shown. in the side frames 0. c, and is kept horizontal by a parallel motion as shown, or by some similar device.

The arrangement of the roll shaft and thrust block is exactly the same as for the fixed roll carriage except that instead of the thrust block being attached to thc sidc frames by the bolts, it is attached to a yoke n having trunnions 72 carrying rollers q.

Patented Jan. 16, 192.3.

RALPH H. BAKER, OF AT'ILEBOBO, MASSACHUSETTS, ASSIGNOR '10 V. H. BLACKINTON 86 (30., 0F ATTLEIBORO FALLS, MASSACHUSETTS.

CHAIN.

Application filed August 10, 1922. Serial No. 580,956.

To all whom it may concern:

Be it known that I, RALPH H. BAKER, a citizen of the United States, residing at Attleboro, in the county of Bristol and State of Massachusetts, have invented certain new and useful Improvements in Chains; and I do declare the following to be a. full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to improvements in chains and more particularly to those of ornamental nature designed primarily for use in connection with commandery swords.

The object of the invention is to provide a a chain which may be easily and inexpensively manufactured and marketed, yet one which will be highly efficient and desirable and will maintain the required alinement of links.

With the foregoing in view, the invention resides in the novel subject matter hereinafter described and claimed, the description being supplemented by the accompanying drawing.

Figure 1 is a side elevation partly in section showing a portion ofa chain constructed in accordance with my invention.

Figure 2 is an edge view withv parts in section, as indicated by line 22 of Fig. 1.

Figure 3 is a perspective view of one or" the transverse sleeves or barrels.

Figure 4 is a perspective view showing two of the connectors for the side rings and the barrels.

In the drawings above briefly described, the numerals 1 designate a plurality of parallel sleeves or barrels, each of which may well be bent from a single strip of sheet metal. At each end or the sleeves or bar rels 1. a line of circular links or rings 2 is provided and to connect the rings of each line with each other and with the sleeves 1, I provide a plurality of ring and sleeve connectors 3, each of which is preferably formed from a single piece of wire bent into the form of a U with a long arm i and a short arm 5, the free end of the latter being bent outwardly to provide a stud 6 for reception in an opening 7 in the barrel or sleeve 1. By providing each of the connectors 3 with a long arm 4 opposite the short stud-carrying arm 5, it will be seen that twisting or canting of the connector within the sleeve or barrel 1, is prevented. lit will also be observed that by passing the studs 6 through openings 7 in the several sleeves l, endwise movement of said connectors with respect to the sleeves is positively prevented, so that the rings or links 2 at each edge of the chain will be maintained in the highly desired alinement with each other.

As excellent results have been obtained from the details disclosed, these details are preferably followed, but within the scope of the invention as claimed, numerous minor changes may of course be made and it will be understood that the design or ornamentation of all parts may var as occasion may require.

I claim:

1. A chain comprising a plurality of parallel sleeves, a line of rings at each end oi said sleeves, and separate Ushaped ring and sleeve connectors straddling said rings and removably inserted into the sleeves through the ends thereof and detachably engaged therewith.

2. A chain comprising parallal sleeves, a line of rings at each end of said sleeves, and yieldable ring and sleeve connectors engaging said rings and received in said sleeves, each connector having an outwardly projecting stud engaging the sleeve to prevent relative movement.

3. A chain comprising a plurality of parallel sleeves, a line of rings at each end of said sleeves, and separate ll-shaped ring and sleeve connectors straddling said rings and inserted into the ends of said sleeves, at least one arm of each connector having an outwardly extending stud engaging the sleeve to prevent relative movement of the two.

-l-. A. chain comprising a plurality of paralled sleeves, aline of rings at each end or said sleeves, and separate U-shaped ring and sleeve connectors straddling said rings and inserted into the ends of said sleeves, each connector having a long arm and a short 

